Method for manufacturing alignment film

Abstract

The invention relates to a method for manufacturing an alignment film, comprising the following steps: providing a spray head and a substrate, wherein the spray head is used for spraying a liquid alignment film material on the surface of the substrate and is provided with a plurality of nozzles; the distance of adjacent nozzles is N times the effective liquid-spraying width of the surface of the substrate, and N is a natural number larger than or equal to 2; setting a plurality of regions with the width equal to the distance of the adjacent nozzles on the surface of the substrate; utilizing the spray head to spray liquid on the surface of the substrate by enabling each nozzle of the spray head to spray the liquid to a corresponding region along a preset liquid-spraying track to distribute the alignment film material in all the regions of the surface of the substrate and form an alignment film material layer on the surface of the substrate; and solidifying the alignment film material layer and utilizing alignment equipment to form a plurality of grooves with preset directions and preset angles on the surface of the alignment film material layer so as to form the alignment film.

Description

technical field [0001] The invention relates to a method for making an alignment film, in particular to a method for making an alignment film by using an inkjet method. Background technique [0002] The multimedia technology in today's society is quite developed, most of which benefit from the progress of semiconductor components or display devices. As far as displays are concerned, liquid crystal display panels with superior characteristics such as high image quality, good space utilization, low power consumption, and no radiation have gradually become the mainstream of the market. A general liquid crystal panel is mainly composed of two substrates and a liquid crystal layer arranged between the two substrates. Whether it is an active matrix liquid crystal display or a passive matrix liquid crystal display, there must be an alignment layer on both substrates. The main function of this alignment film is to align the liquid crystal molecules. Therefore, the liquid crystal m...

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Problems solved by technology

[0005] However, the solvent in the alignment film material is highly volatile. After the solvent evaporates, the sprayed film will shrink, making the edge of the sprayed film thicker than the middle part. When the alignment film is applied to a liquid crystal panel, the display of the liquid crystal panel will be reduced. Streak-like defects (mura)

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